81765712

素因数分解:

$2^4\times 7^3\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:393

約数の個数: 80

約数和(自身を含む): 189273600

約数和(自身を除く): 107507888

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 47, 49, 56, 94, 98, 112, 188, 196, 317, 329, 343, 376, 392, 634, 658, 686, 752, 784, 1268, 1316, 1372, 2219, 2303, 2536, 2632, 2744, 4438, 4606, 5072, 5264, 5488, 8876, 9212, 14899, 15533, 16121, 17752, 18424, 29798, 31066, 32242, 35504, 36848, 59596, 62132, 64484, 104293, 108731, 119192, 124264, 128968, 208586, 217462, 238384, 248528, 257936, 417172, 434924, 730051, 834344, 869848, 1460102, 1668688, 1739696, 2920204, 5110357, 5840408, 10220714, 11680816, 20441428, 40882856, 81765712]

約数ペア:

[(1, 81765712), (2, 40882856), (4, 20441428), (7, 11680816), (8, 10220714), (14, 5840408), (16, 5110357), (28, 2920204), (47, 1739696), (49, 1668688), (56, 1460102), (94, 869848), (98, 834344), (112, 730051), (188, 434924), (196, 417172), (317, 257936), (329, 248528), (343, 238384), (376, 217462), (392, 208586), (634, 128968), (658, 124264), (686, 119192), (752, 108731), (784, 104293), (1268, 64484), (1316, 62132), (1372, 59596), (2219, 36848), (2303, 35504), (2536, 32242), (2632, 31066), (2744, 29798), (4438, 18424), (4606, 17752), (5072, 16121), (5264, 15533), (5488, 14899), (8876, 9212)]